JPH03149698A - Remote monitoring device - Google Patents

Abstract

PURPOSE:To attain the efficient operation of a remote monitoring device by restricting and deciding a failure portion based on an output value and an input value from/to a control circuit at the time of generating an abnormal state when the operation of an installation is started or stopped and immediately informing the decided result. CONSTITUTION:The input terminal of a control circuit 15 is connected to one input terminal of a comparator through an interface 22, the output terminal of the control circuit 15 is connected to the other input terminal of the comparator 22 and a display element 23 is connected to the output terminal of the comparator 22. The 1st control circuit consists of control circuits 7, 11 and transistors 8, 12, the state of an output circuit part 3 is decided by the input value of a control signal for the installation to the 1st control circuit 7, 8, 11, 12 and the output value of the 1st control circuit 7, 8, 11, 12 and the decided result is informed. Thereby, whether the cause of the failure is included in the output circuit of a monitoring center or in other parts can be immediately decided.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a remote monitoring device, and more particularly to a remote monitoring device equipped with a reporting means for determining and reporting an abnormal location when an abnormal operation occurs.

<Prior Art> FIG. 2 shows a circuit of a conventional remote monitoring device, in which a monitoring center 2 is provided with an output circuit section 3 and an input circuit section 4, and the output circuit section 3 includes a DC power supply 5, a transistor 8, control circuit 7,
Key 6 to start the motor of equipment, transistor 12
, key 1 to stop the control circuit 11 and the motor of the equipment
0. Also. The input circuit section 4 includes a DC power supply 1
4. It is equipped with a control circuit 15 and a CRT 16 that displays the operating status of the motors of the equipment.

A control circuit 7 is connected to the key 6, an output terminal of the control circuit 7 is connected to the base of the transistor 8, and the output terminal of the control circuit 7 is connected to the base of the transistor 8.
The collector of the transistor 8 is connected to the DC current 5 via a relay CX arranged on the equipment side, and the emitter of the transistor 8 is grounded. Similarly, a control circuit 11 is connected to the key IO.

The output terminal of the control circuit 11 is connected to the base of the transistor 12, the collector of the transistor 12 is connected to the DC power supply 5 via the relay TX arranged on the equipment side, and the emitter of the transistor 12 is grounded. .

In addition, the DC power supply 14 is connected to the control circuit 1 through a contact 52a2 of a contactor 52, which will be described later, and which is arranged on the equipment side.
A CRT 16 is connected to the output terminal of the control circuit 15.

On the other hand, in order to drive a motor (not shown) of equipment 1 that is remotely arranged with respect to the monitoring center 2, contacts TXb of relay TX, contact CXa of relay Cx, and contactor are connected to DC power terminals P and N. 52 are connected in series with each other,
A contact 52al of the contactor 52 is connected in parallel to the contact CXa.

In such a conventional remote monitoring device, when starting the motor of equipment, when the key 6 is pressed and operated, a control signal is supplied to the relay Cx via the control circuit 7 and the transistor 8, and the relay Cx is activated. CX is energized.

When the relay CX is energized, the contact CXa is turned ON, so DC power is supplied to the contactor 52 from the DC power supply terminal PN, the contactor 52 is energized, and the contact 52al is turned ON, so that the contactor 52 is self-held. Ru.

When the contactor 52 is energized, a motor (not shown) of the equipment 1 rotates, and the equipment is brought into operation. At the same time, the contact 52a2 is turned on, so the DC power supply 14 is supplied to the control circuit 15, and the control circuit 15 displays on the CRT 16 that the motor of the equipment is turned on.

To stop the motor of equipment, press and operate the key IO, and a control signal is supplied to the relay TX via the control circuit 11 and the transistor 12, and the relay T
X is energized.

When the relay TX is energized, the contact TXb is turned OFF, so the supply of DC power from the DC power terminal PN to the contactor 52 is canceled, and the contactor 52 is deenergized, so the setting S
The motor of unit a stops.

At the same time, the contact 52a2 is turned OFF due to the deenergization of the contactor 52.
FF, and the supply of DC power 14 to the control circuit 15 is canceled.
A display indicating that the motor of the unit III is OFF is displayed.

Note that the technology related to the above-mentioned conventional remote monitoring device is disclosed, for example, in Densetsu Kogyo (March 1980 issue), pages 39 to 54.

<Problems to be Solved by the Invention> In the above-mentioned conventional remote monitoring device, for example, when the key 6 is pressed to start the motor of the equipment, the CRT 14 does not display the indication that the equipment motor is ON. do. In this case, the reason why the display is not performed in the conventional remote monitoring device is that the output circuit section 3 and the input circuit section 4
It is unclear whether the problem is caused by the equipment 1 (for example, poor contact at contact CXa).

Therefore, when such a failure occurs, the task of finding the cause of the failure is complicated, and it takes a long time to find the cause.

The present invention has been made in view of the current state of conventional remote monitoring devices as described above, and its purpose is to provide a remote monitoring device that determines the location of a failure when a failure occurs and reports the location. be.

Means for Solving the Problem> In order to achieve the above object, - the invention according to claim (1) includes an output circuit unit including a first control circuit of the monitoring center and a second control circuit unit. and an input circuit section equipped with a display, and a control signal for equipment located at a remote location is inputted to the output circuit section via the first control circuit, and the equipment is controlled by this control signal. In the remote monitoring device, an operation signal indicating an operation state of the equipment is input and displayed on the display via the second control circuit, and the control signal is transmitted to the first control circuit. The configuration is provided in the output circuit section based on the input value and the output value from the first control circuit.

Further, in the invention described in claim (2), in addition to the configuration of the invention described in claim (1), the input value of the operation signal to the second control circuit and the input value of the operation signal to the second control circuit An auxiliary notification means for determining and reporting the state of the input circuit section based on the output value of the input circuit section is provided in the input circuit section.

<Operation> In the invention described in claim (1), the input value of the control signal of the equipment to the first control circuit and the first
The state of the output circuit is determined based on the output value from the control circuit of the monitoring center, and the result of this determination is reported. Input circuits (input circuits, equipment, etc.) can be immediately determined.

Further, in the invention described in claim (2), in addition to the notification by the notification means, the auxiliary notification means inputs the input value of the operation signal of the equipment to the second control circuit and the input value from the second control circuit. The state of the input circuit is determined based on the output value of It is immediately determined whether the equipment is in the equipment or not.

<Example> Embodiments of the present invention will be described below with reference to FIG.

Here, FIG. 1 is a circuit diagram showing the configuration of an embodiment.

As shown in FIG. 1, the embodiment has already been described using FIG. 2, and the control circuit B7.
1 and a selection circuit 17 each having an input terminal as an input terminal.
is provided, and the output terminal of this selection circuit 17 is connected to the comparison circuit 1.
The display element 20 is connected to one input terminal of the comparator circuit 9, and the display element 20 is connected to the output terminal of the comparator circuit 19.

Similarly, a selection circuit 18 is provided whose input terminals are connected to the collectors of the transistors 8 and 12, respectively, and the output terminal of this selection circuit 18 is connected to the other input terminal of the comparison circuit 19 via an interface 25. ing.

The selection circuit 17 is provided with a gate 17G (game) 1
When 7G is ON, the selection circuit 17 selects the control signal of the output terminal of the key 6. Further, the selection circuit 18 is provided with a gate 18G, and the gate 18G is
If N, the selection circuit 18 selects the signal at the collector of the transistor 8.

Furthermore, in the embodiment, the input terminal of the control circuit 15 is connected to one input terminal of the comparator circuit 22 via the interface 21, and the control circuit 15 is The output terminal of the circuit 15 is connected to the other input terminal of the comparison circuit 22, and the display element 23 is connected to the output terminal of the comparison circuit 22.

The configuration of other parts of the embodiment is the same as the conventional remote monitoring device already described with reference to FIG.

In an embodiment of such a configuration, the control circuit 7.11,
Transistor 8.12 constitutes the first control circuit of the present invention, control circuit 15 constitutes the second control circuit of the present invention, and CRT 16 constitutes the display of the present invention.

Further, in the embodiment, the selection circuit 17, 18, the interface 25, the comparison circuit 19 and the display element 20 constitute the reporting means of the present invention, and the interface 21, the comparison circuit 2
2 and the display element 22 constitute the auxiliary notification means of the present invention.

Next, the operation of the embodiment will be explained.

As already explained with reference to FIG. 2, when the key 6 is pressed in FIG. 1, the motor of the equipment starts, and a display indicating that the motor of the equipment is ON is displayed on the CRT 16.

In this case, even though key 6 was operated, CRT1
When the motor ON of the equipment is not displayed in step 6, in the embodiment, it is possible to immediately determine which of the output circuit section 3, the input circuit section 4, and the equipment l is at fault.

First, the determination by the output circuit section 3 will be explained.

When the key 6 is pressed to input a control signal to start the motor of the equipment, when the gate 17G of the selection circuit 17 and the gate 18G of the selection circuit 18 are turned ON, the input signal of the control circuit 7 is The signal from the collector of transistor 8 is input to comparison circuit 19 via selection circuit 17 and is input to comparison circuit 19 via selection circuit 18 and interface 25, and both signals are compared by comparison circuit 19.

In this case, if the operation of the control circuit 7 and transistor 8 is normal, the input signal of the control circuit 7 and the signal at the collector of the transistor 8 match, and if the operation of the control circuit 7 and transistor 8 is abnormal, the input signal of the control circuit 7 and the signal at the collector of the transistor 8 match. #! The circuit is constructed so that the input signal of the transistor 8 and the signal of the collector of the transistor 8 do not match. If the input signal of the control circuit 7 and the signal of the collector of the transistor 8 do not match, the output signal of the comparison circuit 19 causes the display element 20 to display.

For this reason, when the key 6 is pressed down, the gate 17G of the selection circuit 17 and the gate 1''8G of the selection circuit 18 are turned on, and when the display element 20 displays, the control circuit 7 and the transistor 8 are As a result, it is determined that there is a failure location in the output circuit section 3.

Also, in the input circuit section 4, the input signal of the control circuit 15 corresponding to the operation signal of the equipment through the contact 52a2 which is turned ON by the energization of the contactor 52 is transmitted to the interface 21.
The output signal of the control circuit 15 is input to the comparison circuit 22 through the comparison circuit 22, and both signals are input to the comparison circuit 22.
are compared.

In this case, if the operation of the control circuit 15 is normal, the input signal and the output signal of the control circuit 15 match, and the control circuit 15
The circuit is configured such that if the operation of the control circuit 15 is abnormal, the input signal and output signal of the control circuit 15 will be inconsistent. Then, when the input signal and output signal of the control circuit 15 do not match, the display element 23 is displayed by the output signal of the comparison circuit 22.

Therefore, if the display element 20 is not displaying but the display element 23 is displaying, it is determined that there is a faulty part in the input circuit section 4 centering on the control circuit 15.

In addition, if neither the display element 20 nor the display element 23 is displaying, it may be caused by a faulty connection such as a contact failure of the contact CXa.
It is determined that there is a malfunction in device 1.

If the motor OFF of the equipment is not displayed on the CRT 16 even though the key IO is operated, the display element 20 will be displayed in exactly the same manner with the gates 17G and 18G of the selection circuit 17.18 set to OFF. By checking the display of .23, you can determine which part is at fault.

As described above, according to the embodiment, when an abnormal situation occurs when the equipment is started or stopped, it is possible to determine whether the failure has occurred in the output circuit section 3 or the input circuit section 4 of the monitoring center 2, or whether the equipment A determination as to whether the problem has occurred in the device is immediately made. Therefore, since the failure part is limited, repairs can be performed efficiently and downtime of the remote monitoring device can be reduced.

In addition, in the embodiment, a case has been described in which a display element is used to notify abnormalities in the output circuit section and input circuit section, but the present invention is not limited to the embodiments, and this abnormality notification may also be performed using a buzzer. I can do it.

<Effects of the Invention> As explained in detail above, according to the present invention, it is possible to prevent abnormal situations from occurring when starting and stopping the operation of equipment.
Since the failure part is determined and immediately notified, repairs can be completed in a short period of time, reducing downtime of the remote monitoring device and allowing it to operate efficiently.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing the configuration of an embodiment of the present invention, and FIG. 2 is a circuit diagram showing the configuration of a conventional remote monitoring device. 1...Equipment equipment, 2...Monitoring center,
3... Output circuit section, 4... Input circuit section, 5.14... DC power supply, 6.10...
・Key, 7.11.15... Control circuit, 8.1
2...Transistor, 16...CRT
, 17.18...Selection circuit, 17G, 18G-
...gate, 19.22...comparison circuit,
20.23...Display element, 21.25...
...Interface, 52...Contactor, 5
2a1.52a2, TXb, CXa...Contact.

Claims (2)

[Claims] (1) The monitoring center includes an output circuit section including a first control circuit, and an input circuit section including a second control circuit and a display, and the output circuit section includes the first control circuit. Control signals for equipment located at remote locations are input through the
In the remote monitoring device, an operation signal indicating an operation state of the equipment controlled by the control signal is input and displayed on the display via the second control circuit. The output circuit section is characterized in that a reporting means for determining and reporting the state of the output circuit section based on an input value to the control circuit and an output value from the first control circuit is provided in the output circuit section. remote monitoring device. (2) The monitoring center includes an output circuit section including a first control circuit, and an input circuit section including a second control circuit and a display, and the output circuit section includes the first control circuit. The control signals of the equipment located at the remote value are input through the
In the remote monitoring device, an operation signal indicating an operation state of the equipment controlled by the control signal is input and displayed on the display via the second control circuit. Reporting means for determining and reporting the state of the output circuit section based on the input value to the control circuit and the output value from the first control circuit is provided in the output circuit section, The input circuit section is provided with auxiliary reporting means for determining and reporting the state of the input circuit section based on the input value to the second control circuit and the output value from the second control circuit. A remote monitoring device featuring: